Adjustable gripper-pad.



J. R. BLAINE.

ADJUSTABLE GRIPPER PAD.

APPLICATION FILED APR. 6. I916.

1 08,731 Patented Dec. 19, 1916.

2 SHEETS-SHEET l-' m: mun-s urn-us ca. mom :1 mo. 1145mm; ran n. c

JOSEPH It. BLAINE, OF OAK PARK, ILLINOIS, ASSIGNOR T0 IVIIEHLE PRINTINGPRESS & MANUFACTURING COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OFILLINOIS.

ADJUSTABLE GRIPPER-PAD.

Application filed April 6, 1916.

To all whom it may concern Be it known that I, JOSEPH R. BLAINE, acitizen of the United States, residing at Oak Park, in the county ofCook and State of Illinois, have invented certain new and usefulImprovements in Adjustable Gripper- Pads, of which the following is aspecifioation.

The object of the invention is the provision of improved means forleveling and clamping in position the gripper pads of a printing press,said means comprising a series of local elevating and clamping devicesarranged at intervals longitudinally of the cylinder and a furtherdevice acting upon the local devices in unison whereby to simultaneouslyand uniformly raise or lower the gripper pads throughout the length ofthe cylinder in order to adapt them to varying thicknesses of paper,together with means for visually gaging the amount of such simultaneousadjustment.

In order that the invention may be readily understood a preferredembodiment of the same is set forth in the accompanying drawings and inthe description based thereon. As, however, the invention is susceptibleof embodiment in other and varied constructional forms without departurefrom the essence of the invention, the drawings and description are tobe taken in an illustrative and not in an unnecessarily limiting sense.

In the drawings Figure 1 is a transverse sectional view on the line 11of Fig. 5 showing in side elevation the arrangement of the grippers,gripper pads and the blanket clamping device; Fig. 2 is a detail frontelevation of the gripper pads; Fig. 3 is a vertical section through thegripper pads on the line 33 of Fig. 2; Fig. 4 is a fragmentary rearelevational view of the connection between the shifting bar and thegripping pads; Fig. 5 is a top plan view of the parts shown in sectionin Fig. 1; and Fig. 6 is, a transverse sectional view on the line 66 ofFig. 5.

In the drawings the cylinder is indicated 7 at 11, mounted in the usualmanner in the side frame of the press and cut away at 12 to provide forthe mounting of the various devices by means of which the blanket orplate is clamped in position and the gripper Specification of LettersPatent.

Patented Dec. 13, 1916.

Serial No. 89,295.

pads are held in proper adjustable position for cooperation with thegrippers themselves.

Between the end walls of the cut away portion 12 of the cylinder extendthree shafts numbered consecutively 13, 14 and 15. The shaft 14 hasmounted thereon by means of bosses 16 the arms 17, and also an arm 18the extremity of which latter is provided with the adjusting screw 19while the extremity of the arm 17 carries the clamp 20 by means of whichthe blanket or plate 21 is firmly clamped in position upon the cylinder.The shaft 15 carries the grippers 22 arranged to be operated in theusual manuer and to cooperate with the gripper pads 23 to clamptherebetween the sheet of paper which is being acted upon by the press.

It is important that the upper roughened face of thegripper pads 23shall bear an exact relation to the upper surface of the plate orblanket 21 and that they shall be uniform as to such relation. It isalso important that provision be made for adjusting the elevation of thegripper pads not only individually but also collectively in order toaccord with changing conditions of use. This invention, therefore, hasto do with the provisionof means for individually and collectivelyadjusting the gripper pads.

Upon the shaft 13 are mounted arms 24 upon the extremity of which thegripper pads 23 are carried, and also another arm 25, the extremity ofwhich is provided with the adjusting screw 26. Between the arms 24 andupon the shaft 13 is mounted a tail piece 28 arranged to be clamped tosaid shaft by means of the set screw 29, the end of the tail piece 28bearing upon the rear wall of the cylinder. cutaway portion as clearlyshown in Fig. 1.

The gripper pad 23 is adjustably mounted upon the upper extremity of thearm 24 within guides 24* by means of a clamping set screw 30, threadedin the pad and passing loosely through the upper extremity of said arm24 and provided with a washer 31 and a squared head 32. Mounted withinthe upper portion of the arm 24 below the gripper pad and set screw is abearing pin 33 carrying a segment plate 34 provided with an arcuate slot34 through which the set screw 30 passes, the said plate being confinedbetween the upper extremity of the arm 241 and the washer 31. Thebearing pin 33 carries upon the opposite end a stud 35 eccentricallyarranged, which stud impinges against the lower face of the gripper pad23.

For the purpose of. individually adjusting the radial position of thegripper pads, the set screw 30 is loosened by means of its head 32 andthe bearing pin 33 is angularly adjusted by tapping upon tne edge of thesegment plate 3% whereby the eccentric stud 35 is moved to raise orlower the gripper pads 23. lVhen the desired adjustment is obtained theset screw 30 is tightened by means of its head upon the segment plate soas to hold the eccentric stud and thepad itself securely in position.The same procedure is followed with reference to all of the gripper pads23 so as to bring the same to a common level.

In order to secure simultaneous and uniform leveling of the gripper pads23 the following means are provided: The shaft 13 is mounted in two ormore bearing brackets 36 which are clamped to the rear wall of thecylinder cut-away portion by means of the bolts 37 extending throughelongated slots 38 of said brackets. These brackets 36 are also providedon their rear faces with obliquely arranged lugs or ribs 39 which arereceived within oblique grooves 40 formed in the outer face of theadjusting bar 41, which bar is seated within a recess in the back wallof the cut-away portion of the cylinder as clearly shown in Fig.v 1.

It will be understood that the set screws 37 having been loosened, anylongitudinal shifting movement of the adjusting bar 41 will cause thebrackets 36 and with them the shaft 13 to be adjusted vertically by thecooperation of the oblique rib 39 within the oblique recess 40 of theadjusting bar, this oblique rib and slot connection serving; totranslate the longitudinal movement of the bar into a transversemovement of the brackets.

In order to longitudinally shift the ad justing bar 41- and to visuallygage and tie termine the extent of uniform simultaneous verticaladjustment of the gripper pads by means of said bar ll, the latter isprovided with a recess 42 into which takes the upper end {T3 of a sectorplate 4-4;, which sector. plate is pivoted at d5 in the horizontal wallor bottom of the cut-away portion 12 of the cylinder, the plate 4%extending horizontally beneath the shafts 13, 14: and 15. The outerextremity of the plate ist is provided with an arcuate slot 46 throughwhich passes a clamping set screw 47 into threaded engagement with thebottom wall of the cut- The extremity of the sec- .a cam member actingon the pad and a por- 7O cylinder, the grippers, the grlpper pads, and

the 'ri )er )ad su )ort of means to ad'ustb 7 ably position the pads onsaid supports 'radially of the cylinder,said means comprising tion ofthe support, and means to clamp the pad and support together in adjustedposition. V

2. The combination with a printing press cylinder, the grippers, thegripper pads, and the gripper pad support, of means to adjustablyposition the pads on said supports radially of the cylinder, said meanscompris-' ing a pin rotatably mounted injthe support and having aneccentric portion bearing upon the lower. face of the pad, means forrotating said pin, and means to clamp the pad and support together inadjusted posi-. tion. V

3. The combination with a printing press cylinder, the grippers, thegripper pads, and

the gripper pad supports, of means to adjustably position the padsonsaid supports radially of the cylinder, said means comprising a pinrotatably' mounted in the support and having projecting therefrom aneccentric stud bearing upon the lower face of-the pad, means toangularly position the pin comprising a segment plate mounted thereonand having an arcuate slot, and means to clamp the pin inadjustedposition comprising a set screw passing throughthe slot 7 intothe gripper pad, said set screw acting to clamp the segment plate, thesupport and the gripper pad together in adjusted relation. V

at. The combination with a printing press cylinder, and the grippers, ofa shaft, arms projecting from said shaft, a gripper; pad carried by eachof said arms, and means to adjustably position the pads on' saidarmsradially of the cylinder, said means coinprising a cam member acting onthe pad and. a portion of the arm, and means to clamp the pad and armstogetherjin adjusted position. V f .7 7

5. The combination with a printing press cylinder, and the grippers, ofa shaft, arms projecting from said shaft, a gripper pad carried by eachof said'arms, and means to V the pad and arm together inadjustedposition.

6. The combination with a printing press cylinder, and the grippers, ofa shaft, arms projecting from said shaft, a gripper pad guided on eachof said arms, and means to pad.

adjustably position the pads on said arms radially of the cylinder, saidmeans comprising a pin rotatably mounted. in the arm and having aneccentric stud bearing upon the lower face of the pad, means forrotating said pin, and means to clamp the pad and arm together inadjusted position.

7 The combination with a printing press cylinder, and the grippers, of ashaft, arms projecting from said shaft, a gripper pad carried by each ofsaid arms, and means to adjustably position the pads on said armsradially of the cylinder, said means comprising a pin rotatably mountedin the arm and having projecting therefrom an eccentric stud bearingupon the lower face of the pad, means to angularly position the pincomprising a segment plate mounted thereon and having an arcuate slot,and means to clamp the pin in adjusted position comprising a set screwpassing through the slot into the gripper pad, said set screw acting toclamp the segment plate, the arm and the gripper pad together inadjusted relation.

8. The combination with a printing press cylinder, and the grippers, ofa shaft, arms projecting from said shaft, a gripper pad carried by eachof said arms, means to adjustably position the pads on said armsradially of the cylinder, means to adjustably position the shaft withthe arms and pads bodily in a radial direction whereby to simultaneouslyand collectively position all of the gripper pads, and means to visuallygage and determine the amount of the bodily radial movement of the shaftand 9. The combination with a printing press cylinder, and the grippers,of a shaft, arms projecting from said shaft, a gripper pad guided oneach of said arms, means to adjustably position the pads on said armsradially of the cylinder, means to adjustably position the shaft withthe arms and pads bodily in a radial direction whereby to simultaneouslyand collectively position all of the gripper pads, and means to visuallygage and determine the amount of the bodily radial movement of the shaftand pad, said gaging means comprising a scale and index whereby suchradial movement may be read in multiplied degree.

10. The combination with a printing press cylinder, and the grippers, ofa shaft, arms projecting from said shaft, a gripper pad carried by eachof said arms, means to individually adjust the pads on said arms ment ofthe brackets on the supports trans-- versely of the shaft, an adjustingbar shiftable parallel to the shaft, a connection between the bar andbracket whereby to trans late the longitudinal movement of the bar intoa transverse movement of the bracket, and bar shifting means comprisinga sector plate mounted as a lever, with one arm engaging the bar as witha gear and tooth connection, and the other arm of the lever plate beingof greater length and provided with graduations cooperating with apointer whereby to indicate in multiplied degree the longitudinalmovement of the bar. 7

In testimony whereof I have hereunto signed my name in the presence oftwo subscribing witnesses.

JOSEPH R. BLAINE.

Witnesses:

A. G. FISCHER, E. F. DUDLEY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. 0.

